ci: create github release and tag after publish

Author: sebastianwessel

.github/workflows/release.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
 
 permissions:
-  contents: read
+  contents: write
   id-token: write
 
 jobs:
@@ -91,3 +91,20 @@ jobs:
 
       - name: Publish to JSR
         run: npx jsr publish
+
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+          VERSION: ${{ steps.version.outputs.value }}
+        run: |
+          set -euo pipefail
+          TAG="v${VERSION}"
+          if gh release view "${TAG}" --repo "${GITHUB_REPOSITORY}" >/dev/null 2>&1; then
+            echo "Release ${TAG} already exists."
+            exit 1
+          fi
+          gh release create "${TAG}" \
+            --repo "${GITHUB_REPOSITORY}" \
+            --target "${GITHUB_SHA}" \
+            --title "${TAG}" \
+            --generate-notes